eID is the obvious answer here in Europe. Right now it's kinda scattered with different providers, but I believe EU is working on a more universal protocol. Unfortnately there are rumors it will require official Google/Apple play stores, unrooted devices, and all that it does today already.
But it should be treated as a relatively safe ID, it's even used for voting. If you feel uncomfortable, just have one device for eID, and one for everything else.
I think it's a great tool if we want to implement some sort of liquid democracy feature.
So a local ballot box.
Host a platform like this at city hall, county building, capitol building, schools.
Only a human can access a terminal. Have humans monitor ingress/egress.
A more generalized solution that solves the specific problem inherent to all these digital ones.
If it requires me to leave the house, that increase in friction will mean I will vote maybe on 1/100th what I would otherwise vote on. I suspect pretty much everyone is the same